*{
    margin: 0;
    padding: 0;
   
}
body{
    font-family: '微软雅黑';
}
ul{
    list-style: none;
}
       .header{
           width: 100%;
           height:80px;
            background-color: #fff;
       }
       .logo{
           margin-left: 10%;
           float: left;
           margin-top: 15px;

       }
       .header ul{
          float: left;
          margin-left: 5%;
       }
       .header ul li{
           line-height:78px;
           padding: 0 15px;
           font-size: 17px;
           float: left;
       }
       .header ul li:hover{
           border-bottom:2px solid #1dbcda ;
       }
       .header .sou{
           float: left;
           margin-left: 10%;
           margin-top: 10px;
           width: 10%;
           height: 30px;
           margin-top: 20px;
           padding: 1px;
           border: 1px solid #ccc;
           background-color:  #ebebeb;
          
       }
       .header .sou input{
          width: 70%;
          height: 15px;
          margin: 5px;
          margin-right: 0;
          margin-top: 7.5px;    
          float: left;
          border: none;
          background-color: #ebebeb;outline: none;
        
       }
       .header .sou button{
           background:url(image/biao.jpg)no-repeat;
           background-size: 100%;
           width: 20px;
           height: 20px;
           margin-top: 5px;
           border: none;
           float: right;
           outline: none;
       }
       .nav0{
           width: 100%;
           height: 60px;
           background-color: #f0f0f0;
       }
       .nav0 ul{
           margin-left: 10%;
           line-height:60px;


       }
       .nav0 ul li{
           float: left;
           color: rgba(0, 0, 0,0.7);
           margin-right: 15px;
       }
       .nav0 ul li:nth-child(2){
           color:rgba(0, 0, 0,0.3) ;
           
       }
       .nav0 ul li:nth-child(4){
           color:rgba(0, 0, 0,0.3) ;
           
       }
       .nav1{
           width: 100%;
           height: 500px;
       }
       .nav1 img{
           width: 100%;
       }
       .nav2{
           width: 80%;
           height: 200px;
           margin: 0 auto;
           font-size: 18px;
           margin-top: 60px;

       }
       .nav3{
        width: 80%;
           height: 180px;
           margin: 0 auto;
           margin-top: 60px;
           background-color: #f3f6f6;

       }
       .nav3 div{
         float: left;
         border-right: 2px solid #acacac;
         height: 115px;
         padding: 0 15px;
         margin: 15px 0;
         width: 30%;
         text-align: center ;
         padding-top:30px;
       }
       .nav3 .zhong3{
           border: none;
           
       }
       .nav3 div span{
        font-size: 48px;
    color: #00b4d5;
       }
       .nav3 div p{
           font-size: 18px;
           margin-bottom: 10px;
       }
       .btn{
           width: 100%;
           height: 800px;
           background-color: #f4f4f4;
           margin-top: 30px;
       }
       .ze{
           font-size:40px;
           margin-left: 10%;
           height: 80px;
           line-height: 80px;
           color: #444444;

       }
       .ti{
           width: 80%;
           margin: 0 auto;
           height: 720px;
           
       }
       .zuo{
           float: left;
           height: 720px;
           width: 30%;
           margin-right: 3%;
           background-color: #fff;
           
       }
       .zuo .tu1{
           width: 100%;

       }
       .zuo .tu1 img{
           width: 100%;
       }
       .zuo .zi1{
      
           width: 86%;
           margin: 0 6%;
   
       }
       .zi11{
        width: 200px;
        line-height: 58px;
        font-size: 26px;
        border-bottom: solid 2px #1dbcda;
        color: #333;
       }
       .zi2{
        margin-top: 15px;
        font-size: 20px;
        line-height: 35px;
        color: #666;
       }
       .zi3{
        margin-top: 15px;
        font-size: 18px;
        line-height: 35px;
        color: #666;
       }
       .zi3 span{
        font-size: 40px;
        color: #00b4d5;
       }
       .you {
           float: right;
           width: 65%;
           height: 720px;

       }
       .you  .yous{
           width: 100%;
           height: 300px;
           background-color: #fff;
       } .yous .zi1{
           float: left;
           width: 30%;
           margin: 0 2.5%;
       }
       .yous .tu2{
           float: right;
           width: 65%;
           height: 300px;
       }
       .yous .tu2 img{
           width: 100%;
           height: 300px;
       }
       .youx{
        width: 100%;
        height: 400px;
        background-color: #fff;
            margin-top: 20px;
       }
       .youx .tu3{
        float: left;
        width: 65%;
        height: 400px;
       }
       .youx .tu3 img{
        width: 100%;
        height: 400px;
    }
    .youx .zi1{
        float: right;
        
           width: 30%;
           margin: 0 2.5%;
    }
    .btm{
        width: 100%;
        height: 300px;
        margin-top: 50px;

    }
    .btm ul{
        width: 100%;
    }
    .btm ul li{
        position: relative;
        float: left;
        width: 25%;
        height: 300px;
    }
    .btm ul li img{
        width: 100%;
        height: 300px;
    }
    .btm ul li p{
        position: absolute;
        z-index: 10;
        bottom: 20px;
        left: 30%;
        color: #fff;
        font-weight: bold;
        font-size: 18px;
    }
    .btt{
        clear: both;
        padding-top: 50px;
        width: 80%;
        height: 400px;
        margin: 0 auto;
        display: flex;
        flex-direction:row; 
        border-bottom: 1px solid #666;
        
    }
    .btt ul{
        width: 13%;
        height: 300px;
        border-right:1px solid #666 ;
        margin-left:1%;
        
    }
    .btt ul li{
        line-height: 35px;
        color:#666;
    }
    .btt ul:nth-child(3){
        border: none;
    }
    .btt ul:nth-child(4){
        border: none;
    }
        .btt ul:last-child{
        border: none;
    }
    .btt ul li:first-child{
        font-weight: bold;
       color: black;
    }
    .bty{
        width: 100%;
        height: 500px;
        background-color: #ebebeb;
    }
      